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Titolo:
EVALUATION OF DIFFRACTION LOSS IN PRISM LIGHT GUIDES BY FINITE-DIFFERENCE TIME-DOMAIN FIELD MODELING
Autore:
WHITEHEAD LA; SU W; GRANDMAISON DN;
Indirizzi:
UNIV BRITISH COLUMBIA,DEPT PHYS & ASTRON,6224 AGR RD VANCOUVER BC V6T1Z1 CANADA NATL RES COUNCIL CANADA OTTAWA ON K1A 0R6 CANADA
Titolo Testata:
Applied optics
fascicolo: 25, volume: 37, anno: 1998,
pagine: 5836 - 5842
SICI:
0003-6935(1998)37:25<5836:EODLIP>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCATTERING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
L.A. Whitehead et al., "EVALUATION OF DIFFRACTION LOSS IN PRISM LIGHT GUIDES BY FINITE-DIFFERENCE TIME-DOMAIN FIELD MODELING", Applied optics, 37(25), 1998, pp. 5836-5842

Abstract

Prism light guides are hollow dielectric tubes that use prismatic facets to guide light by means of total internal reflection. An unresolved problem has been to determine the magnitude of loss caused by diffraction in prism Light guides. Neither experimental measurement nor an analytical solution has yet been achieved, so we attacked the problem numerically, in two steps. First, we found a way to represent such a transitionally invariant three-dimensional system as an equivalent two-dimensional problem. Second, we employed the finite-difference time-domain algorithm, with periodic boundary conditions, to yield a computation problem of manageable size. We found that the diffraction-induced transmissivity of a prism light guide wall is of the order of the wavelength divided by the prism size-a result that has encouraging practical implications. (C) 1998 Optical Society of America.

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Documento generato il 03/07/20 alle ore 01:14:41